Answer the following questions pertaining to variable valency:
A What is variable valency?
B Write the variable valency of iron.
pls help and thank you for your time ✌️
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A] Certain elements combine with other atoms, donating, accepting or sharing electrons in different proportions depending on the nature of the reaction.
B] Ferrous oxide (FeO) 2 Fe2+
Ferric oxide (Fe2O3) 3 Fe3+
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